Gas / liquid inlet device

Abstract

The utility model discloses a gas / liquid inlet device, relates to the field of energy and chemical industry, and is used for solving the problems of non-uniform distribution, erosion and the like of media at an inlet of an equipment pipeline. Comprising a straight pipe section, a first bent pipe section and a second bent pipe section, and an opening is formed in the inner side of a bent pipe composed of the first bent pipe section and the second bent pipe section; flowing-in fluid flows out from the opening and the end face of the bent pipe, vortex flow is formed, and even distribution of gas / liquid is facilitated. When used in groups, the fluids are mutually entangled and encircled, and the pressure center is bound in the cylindrical surface where the air inlet is located, so that uniform mixing of the fluids and erosion protection on the wall surface of an equipment pipeline are realized.

Description

Technical Field

[0001] This utility model relates to the field of energy and chemical technology, specifically to an air / liquid inlet device. Background Technology

[0002] In energy and chemical production, there are numerous equipment and pipelines. To facilitate the flow, mixing, and reaction of media, inlet and outlet ports are often installed on the equipment, and branch pipes of various specifications are installed on the pipelines. During the process of fluid entering and exiting the equipment and pipelines, due to the different structures of the inlet pipes, the fluid will have different flow patterns as it enters the equipment or pipelines. This distribution directly affects the degree of mixing of the media and has a significant impact on the service life of the equipment and pipelines.

[0003] Among existing air intake structures, short pipes, short pipes with notches, or those with bends or distributors are commonly used. Short pipe structures are simple and widely used. However, this type of structure is not ideal for scenarios requiring high uniformity of flow distribution. Especially when the inflow velocity at the pipe inlet is high, due to the pipe structure itself or pressure distribution and other factors, the inlet fluid often exhibits varying degrees of flow deviation. This not only affects mass and heat transfer but also causes severe erosion of the equipment casing or internal components, leading to erosion damage and breakage accidents, necessitating shutdown for repair or replacement, resulting in significant economic losses and safety hazards. Distributor-type air intake structures are also widely used in production, but they are relatively bulky and prone to clogging. Therefore, it is essential to provide an air / liquid intake device with a reasonable inlet structure that avoids flow deviation. Utility Model Content

[0004] The purpose of this invention is to provide an air / liquid inlet device to solve problems such as uneven fluid distribution caused by unreasonable equipment pipeline inlet structure, resulting in flow deviation and local erosion, while reducing blockage and improving the energy exchange efficiency between media.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An air / liquid intake device, comprising: a straight pipe section, a first bend pipe section, and a second bend pipe section; the first bend pipe section is directly connected to the straight pipe section, and has an opening in its bending direction adapted to the curvature, while its axis forms an angle with the straight pipe section; the second bend pipe section is directly connected to the first bend pipe section, and has a continuous opening in its bending direction adapted to the opening of the first bend pipe section, while its axis forms an angle with the first bend pipe section.

[0006] Optionally, in the above-mentioned intake pipe structure, if necessary, the straight pipe section may be provided with a transition opening adapted to the first bend pipe section.

[0007] Optionally, the above-mentioned intake pipe structures should be used in pairs and arranged symmetrically.

[0008] Optionally, in the above-mentioned intake pipe structure, the centerline of the straight pipe section should be tangent to a certain diameter circle in the plane where the equipment port or pipe is located, and the two bends should maintain a tangent relationship with this diameter circle.

[0009] Compared with existing technologies, when the above technical solution is adopted, the fluid will generate swirling flow when it flows through the straight pipe section and enters the bend. At the same time, some fluid will be ejected from the gap side with greater dynamic pressure. The fluid ejected from the two sets of symmetrically arranged air intake pipes will intertwine and surround each other, and the pressure center will be confined within the cylindrical surface where the air intake is located, preventing erosion of the equipment pipeline. This achieves uniform mixing of the fluid and protection against erosion of the equipment pipeline wall. Compared with the traditional air intake pipe structure, the structure of this application is simple, low in cost, and easy to modify and replace existing equipment pipelines. It can effectively achieve fluid mixing and equipment protection. Attached Figure Description

[0010] Appendix Figure 1-4 This invention is used to illustrate the intent of the present invention and constitutes a part of the present invention. It does not constitute a limitation of the present invention, and any extension based on this intent is considered to be similar to the present invention.

[0011] Figure 1 This is a three-dimensional view for practical use; Figure 2 This is the front view of the three-dimensional view of this utility model; Figure 3 This is a top view of the three-dimensional view of this utility model; Figure 4 This is a schematic diagram of a pair of air / liquid inlet devices provided in this embodiment of the present invention.

[0012] Reference numerals: 1. Straight pipe section; 2. First bend pipe section; 3. Second bend pipe section. Detailed Implementation

[0013] The following is in conjunction with the appendix Figure 1-4 This utility model will be described in detail.

[0014] Figure 1 A three-dimensional view of the air / liquid intake device is shown, including a straight pipe section 1; a first bend pipe section 2; and a second bend pipe section 3.

[0015] Figure 2 The front view of the three-dimensional view of the air / liquid intake device shows that there is a torsion angle between the plane containing the center line of the first bend section 2 and the horizontal plane containing the center line of the straight section 1; there is also a torsion angle between the plane containing the center line of the second bend section 3 and the plane containing the center line of the first bend section 2; the size of the torsion angle is determined by design requirements; both the first bend and the second bend have openings on their inner sides, and the size of the openings is also determined according to design requirements.

[0016] Figure 3The diagram shows a top view of a single air intake structure of an air / liquid intake device according to the present invention. It shows that the straight pipe section 1 is tangent to the center line of the first bend pipe section 2 and the second bend pipe section 3 is tangent to the center line of the first bend pipe section 2. The diameter of the circle containing the straight pipe section 1 is tangent to the diameters of the first bend pipe section 2 and the second bend pipe section 3.

[0017] The purpose of this invention is achieved as follows: Fluid enters through an external pipe and flows along the circle of the straight pipe section 1. After entering the first bend section 2 and the second bend section 3, the fluid flows along the bends, forming vortices. When used in pairs, these vortex pairs are formed. Because the bending radius tends to decrease from the straight pipe section 1 to the first bend section 2 and the second bend section 3, when used in pairs, the two vortex pairs converge in opposite directions at the center of the equipment. Theoretically, the velocity at the end of the vortex pair is zero. Thus, the fluid entering the equipment achieves self-binding and sealing while turning, preventing the loss of fluid kinetic energy at non-target diffusion ends and thus facilitating mass and heat transfer. Furthermore, since this sealing is self-achieved by the fluid, it does not scour the equipment wall, thereby eliminating erosion problems. Meanwhile, since the first bend section 2 and the second bend section 3 are provided with gaps, the gaps open to the upward side and close to the downward side during the torsion process of the first bend section 2 and the second bend section 3. As a result, the fluid vortex forms a self-blocking downward while developing upward in a counteracting, divergent and entangled manner, thereby achieving uniform distribution of the fluid and promoting the improvement of mass and heat transfer efficiency.

Claims

1. A gas / liquid inlet device comprising a straight pipe section (1), characterised in that, The straight pipe section (1) is directly connected with the first elbow pipe section (2), and the first elbow pipe section (2) is directly connected with the second elbow pipe section (3).

2. A gas / liquid inlet device according to claim 1, wherein: The first elbow pipe section (2) has an included angle with the center line of the straight pipe section (1), and the second elbow pipe section (3) has an included angle with the center line of the first elbow pipe section (2).

3. The air / liquid inlet device of claim 1, wherein: The straight pipe section (1) is tangent to the cylindrical surface of the second elbow pipe section (3) and the bending center line of the first elbow pipe section (2).

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